My cousin's DC5 Special Edition (K20A3), is coming up for new spark plugs.

Anyone have any brand recommendations? I've basically looked at NGK, Bosch and Denso.

Also, is their an option for platinum spark plugs for the K20A3? Couldn't find anything on the websites, in regards to a platinum option.

He does a lot of kms per year, hence why I'm considering platinum plugs.